SEBI to issue guidelines on CAS in a week: Chairman Pandey
BusinessLine 1 hr ago·10 Oct 2026, 3:14 pm
SEBI announced that within a week it will release detailed guidelines for the Closing Auction System (CAS). The regulator intends to formalise the auction that sets the official closing price for equities on Indian exchanges.
For investors, the CAS is important because the closing price is used for portfolio valuation, index calculation and settlement. A transparent, well‑run auction can reduce price manipulation and improve confidence, while any changes to the process may affect how orders are placed near market close.
Market participants should watch for the exact rules when they are published – including timing, order types allowed, and any caps on price movement. The rollout schedule and any pilot phases will also be key signals of when the new system will start influencing daily trading.
Excerpt from BusinessLine
Markets regulator SEBI is expected to issue guidelines on determining derivative settlement prices on expiry days within a week, following a review of the Closing Auction Session (CAS) mechanism, its chairman Tuhin Kanta Pandey said on Saturday. The Securities and Exchange Board of India (SEBI) had sought public…Read the original at BusinessLine
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